Hauptseite > Publikationsdatenbank > Magnetic polarization of Ir in underdoped nonsuperconducting Eu(Fe0.94Ir0.06)2As2 > print

001     824610
005     20240529111808.0
037 _ _ |a FZJ-2016-07173
100 1 _ |a Jin, Wentao
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111 2 _ |a 11. International Conference on Polarised Neutrons for Condensed Matter Investigations
|g PNCMI 2016
|c Freising
|d 2016-07-04 - 2016-07-07
|w Germany
245 _ _ |a Magnetic polarization of Ir in underdoped nonsuperconducting Eu(Fe0.94Ir0.06)2As2
260 _ _ |c 2016
336 7 _ |a Conference Paper
|0 33
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520 _ _ |a Abstract: Using polarized neutron diffraction and x-ray resonant magnetic scattering (XRMS) techniques, multiple phase transitions were revealed in an underdoped, nonsuperconducting Eu(Fe1−x Irx)2As2 (x = 0.06) single crystal. Compared with the parent compound EuFe2As2, the tetragonal-to-orthorhombic structural phase transition and the antiferromagnetic order of the Fe2+ moments are significantly suppressed to TS = 111(2) K and TN, Fe = 85(2) K by 6% Ir doping, respectively. In addition, the Eu2+ spins order within the ab plane in the A-type antiferromagnetic structure similar to the parent compound. However, the order temperature is evidently suppressed to TN, Eu = 16.0(5) K by Ir doping. Most strikingly, the XRMS measurements at the Ir L3 edge demonstrates that the Ir 5d states are also magnetically polarized, with the same propagation vector as the magnetic order of Fe. With TN, Ir = 12.0(5) K, they feature a much lower onset temperature compared with TN, Fe. Our observation suggests that the magnetism of the Eu sublattice has a considerable effect on the magnetic nature of the 5d Ir dopant atoms and there exists a possible interplay between the localized Eu2+ moments and the conduction d electrons on the FeAs layers.
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693 _ _ |a Forschungs-Neutronenquelle Heinz Maier-Leibnitz
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700 1 _ |a Xiao, Yinguo
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700 1 _ |a Su, Yixi
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700 1 _ |a Nandi, Shibabrata
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700 1 _ |a Jiao, W. H.
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700 1 _ |a Nisbet, G.
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700 1 _ |a Demirdis, Sultan
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700 1 _ |a Cao, G. H.
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700 1 _ |a Brückel, Thomas
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